KXStudio is available as an 
installable download but its 
software repositories can also be added to a current installation of Ubuntu (version 14.04 and above) or Debian (Jessie and above). Once you have the repositories enabled, you will have access to a large amount of up-to-date applications and software, a lot of which isn't available in stock versions of Ubuntu or Debian.
 
 
Enabling the repositories
Full and up to date details about how to enable the KXStudio repositories can be found over at the 
KXStudio website. Afterwards, make sure to run -
 
sudo apt-get update
 
Now your system is ready to install some packages.
 
Installing packages
 
Once you have the KXStudio repositories installed, you will have a larger selection of software to choose from. You can now do one of two things, install individual packages, or else update your system to KXStudio (recommended).
 
There are two ways to go about updating your system to KXStudio. The first involves installing all of KXStudio available software packages AND updating your desktop environment to KDE, which is the default used in KXStudio. If you want to do this, go to your software center/package manager and install the following packages -
 
kxstudio-desktop
kxstudio-meta-all
 
If you would like to install all software packages from KXstudio but keep your existing desktop environment as default (Unity, XFCE, LXDE) you can install the following packages -
 
kxstudio-default-settings
kxstudio-meta-all